#scroll_totop {
    display: none;
    position: fixed;
   	bottom: 40px;
	right: 10px;
	z-index: 999;
	width: 71px;
	height: 64px;
	cursor: pointer;
    background: url(../images/toTop.gif) no-repeat;
    filter: alpha(opacity=40);
    text-align: center;
	color: #888;
}
#scroll_totop:hover {
    filter: alpha(opacity=80);
    background-position: -88px 0;
	text-decoration: none;
	color: #3a9
}